| Raceme |
| An unbranched, elongated inflorescence with stalked flowers, as in Cymbidium, Cattleya, Odontoglossum, etc. In a raceme, the oldest flowers are borne towards the base and new flowers are produced as the shoot grows. |
Last Updated: 01-26-2008 @ 04:55 PM Submitted By: Oscarman
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| Reflasking |
(re-FLASS-king)
Transplanting small seedlings into flasks of fresh medium to permit greater growth before establishing the seedlings into community pots or thumb pots. |
Last Updated: 10-12-2008 @ 01:35 AM Submitted By: Oscarman
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| Respiration |
(res-pi-RAY-shun)
The gaseous diffusion and interchange bewteen the plant cells and the atmosphere in which the plant absorbs oxygen and gives of carbon dioxide. This process occurs in darkness as well as in the light, and in all plant cells whether they contain chlorophyll or not. |
Last Updated: 10-12-2008 @ 02:00 AM Submitted By: Oscarman
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| Resupinate |
(ree-SOO-pin-ayt)
Orchid flower buds which twist through 180 degrees during development, with the result that upon opening the labellum is in the lowermost position to the dorsal Sepal and petals. |
Last Updated: 04-27-2006 @ 11:14 PM Submitted By: Oscarman
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| Rhizome |
(rai-Zoum)
A horizontal growing stem of a plant that often sends out roots and shoots from its nodes. |
Last Updated: 04-27-2006 @ 11:14 PM Submitted By: Oscarman
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| Rupicolous |
Rock-dwelling.
Most often referring to Brazilian Laelias, where they grow on rock outcrops in full sun with nothing more than grasses and detritus to protect the plants, and nightly mist as the main source of moisture.
Rupicolous plants often exhibit extreme drought adaptations to ensure survival in exposed rocky habitats. Their roots creeping along crevices and fast drying water courses and are largely exposed to the fresh air.
Their pseudobulbs and leaves show the characteristics of other xerophytic (air) plants - succulent or leathery foliage geared to conserve water. The degree of succulence varies between those with short stout thick leaved species that live in full exposure to the sun, and those taller leathery blade leaved species sheltering in the partial shade of small shrubs, the elongated inflorescence reaching above the foliage of the surrounding vegetation. |
Last Updated: 05-17-2013 @ 05:35 PM Submitted By: cb977
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